The distress pulser is a junk item in Fallout 4.


The distress pulser is a device used by the Brotherhood of Steel to mark specific locations, or in the event of an emergency where a soldier or squad may be downed and in need of assistance. When active, it emits a series of blips to any device capable of picking up radio frequencies, which become clearer as the receiver travels closer to the source.


The distress pulser can be broken down into its individual components for use in crafting:

Distress pulser (1)
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Related questsEdit


  • Taking the distress pulsers during the quest The Lost Patrol causes the signal to disappear.
    • Dropping a distress pulser will cause the signal to reappear.
  • During Liberty Reprimed, Haylen will give the Sole Survivor a distress pulser to mark the location of the stockpile of Mark 28 nukes in the Sentinel site.


pcIcon pc xboxoneIcon xboxone ps4Icon ps4 There is a bug where if a distress pulser is dropped on the ground in a settlement and then scrapped using the settlement building screen it will permanently emit a distress signal.[verified]